JP5261196B2 - Adhesive and laminate using the same - Google Patents

Description

  The present invention relates to a novel adhesive and a laminate using the same. More specifically, the present invention is a polypropylene-based adhesive having excellent adhesion to polar materials, particularly excellent after high-speed cast film molding and stretch molding, extrusion coating molding, and excellent in whitening resistance, and The present invention relates to a laminate using the same.

Conventionally, polypropylene has been widely used as a thermoplastic molding material excellent in rigidity, heat resistance, transparency and the like. Since this polypropylene is a non-polar material, it has poor adhesion to polar materials such as ethylene / vinyl alcohol copolymer, and there is a wide range of techniques for modifying polypropylene with unsaturated carboxylic acid or its derivatives for the purpose of improving adhesion. Are known. Also, since polypropylene is inferior in flexibility, a soft rubber component is usually blended with polypropylene when used as an adhesive. Thus, when a soft rubber component is blended with polypropylene, a polypropylene-based adhesive with improved adhesion can be obtained (for example, Patent Document 1 and Patent Document 2), while high-speed cast film molding, stretch molding, extrusion coating, and the like. In a laminate obtained by a molding method such as molding, the adhesives obtained in Patent Documents 1 and 2 do not have sufficient adhesive strength, and further improvement in adhesive strength has been desired. Moreover, since the soft rubber component as described in Patent Documents 1 and 2 causes whitening during secondary processing such as deep drawing, improvement in whitening resistance has also been demanded.
JP-A-9-11069 JP-A-4-300903

  The present invention is a polypropylene adhesive having excellent adhesion to polar materials, and particularly excellent in adhesion after high-speed cast film molding, stretch molding and extrusion coating molding, and excellent in whitening resistance, and uses the same. The purpose is to provide a laminated body.

  The inventors of the present invention have arrived at the present invention as a result of intensive studies to solve the above problems. That is, the present invention relates to a polypropylene component (A), an ethylene / propylene / α-olefin copolymer component (B), an ethylene / α-olefin copolymer component (C), an unsaturated carboxylic acid and / or a derivative thereof ( D) a graft-added resin composition containing the components (A), (B) and (C) in a total of 100 parts by mass, the component (A) being 5 to 80 parts by mass, and the component (B) 5 to 70 parts by mass, component (C) is 1 to 40 parts by mass, and the ratio of ethylene / propylene / α-olefin that is soluble in n-decane is 5 to 95/5 to 95/1 to 50 mol%. The adhesive resin composition is characterized in that the grafting rate is 0.01 to 5 wt%. Moreover, this invention is a laminated body which has at least 1 layer of adhesive bond layers containing this adhesive resin composition.

  According to the adhesive resin composition of the present invention, it is possible to obtain a laminate that is firmly adhered to a polar material, and at the same time, obtain a laminate that is excellent in adhesion even in high-speed cast film molding, stretch molding, and extrusion coating molding. Is also possible. Moreover, it becomes possible to obtain a laminated body without whitening after secondary processing such as deep drawing.

  Hereinafter, the present invention will be described in more detail.

  The polypropylene adhesive of the present invention comprises a polypropylene component (A), an ethylene / propylene / α-olefin copolymer component (B), an ethylene / α-olefin copolymer component (C), an unsaturated carboxylic acid and / or Or a graft-added resin composition containing the derivative (D) thereof, wherein the component (A) is 5 to 80 parts by mass in a total of 100 parts by mass of the components (A), (B) and (C), The component (B) is 5 to 70 parts by mass, the component (C) is 1 to 40 parts by mass, and the ratio of ethylene / propylene / α-olefin that is soluble in n-decane is 5 to 95/5 to 95/1. The adhesive is characterized by 50 mol% and a grafting rate of 0.01 to 5 wt%.

  Each component will be described below.

(A) Polypropylene The polypropylene component (A) used in the present invention is a propylene homopolymer and / or a propylene / α-olefin copolymer.

  The α-olefin is not limited, but preferably includes ethylene having 2 carbon atoms and / or α-olefin having 4 to 20 carbon atoms. These α-olefins may be used alone or in combination of two or more. Good. Preferred α-olefins in the present invention are ethylene having 2 carbon atoms or α-olefin having 4 to 10 carbon atoms, and in particular, ethylene having 2 carbon atoms or α-olefin having 4 to 8 carbon atoms can be suitably used. . Here, the content of the structural unit derived from propylene in the propylene / α-olefin copolymer is at least 50 mol% and less than 100%.

  The intrinsic viscosity [η] of the polypropylene component (A) is in the range of 0.1 to 10 dl / g, and in this range, an adhesive having excellent moldability and mechanical strength can be obtained.

  The method for producing polypropylene (A) is not particularly limited, and can be produced by a known method using a known catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst. In addition, a crystalline polymer can be preferably used, and in the case of a copolymer, it may be a random copolymer or a block copolymer. Furthermore, there are no particular restrictions on the stereoregularity and the molecular weight as long as they satisfy the moldability and have a strength that can be used when formed into a molded body. Commercially available resins can be used as they are.

The polypropylene (A) preferably used in the present invention is a homopolypropylene or a propylene / α-olefin random copolymer. Also, several different isotactic polypropylenes can be mixed and used .

(B) Ethylene / propylene / α-olefin copolymer The ethylene / propylene / α-olefin copolymer (B) in the present invention is defined by the following (i) to (ii). (I) 45 to 90 mol% of propylene component, 10 to 25 mol% of ethylene component, 1 to 30 mol% of component unit derived from α-olefin having 4 to 20 carbon atoms, (ii) in 135 ° C. decalin The intrinsic viscosity [η] is in the range of 0.1 to 10 dl / g. As the α-olefin, an α-olefin having 4 to 10 carbon atoms can be used more suitably, and within this range, one kind may be used alone, or two or more kinds may be used. About the ratio of each monomer component, propylene: 50-85 mol%, ethylene; 10-22 mol%, alpha-olefin; 5-28 mol% is preferable, propylene: 55-80 mol%, ethylene; 10-20 mol %, Α-olefin; 10 to 28 mol% is more preferable. As for (ii), the intrinsic viscosity [η] is preferably in the range of 0.5 to 8, and more preferably in the range of 0.8 to 6. When the amount is in the above range, an adhesive having an excellent balance between flexibility and mechanical strength and high adhesive strength can be obtained.

The method for producing the ethylene / propylene / α-olefin copolymer (B) is not particularly limited, and is produced by a known method using a known catalyst such as a Ziegler / Natta catalyst or a metallocene catalyst. be able to. Furthermore, there are no particular restrictions on the stereoregularity and the molecular weight as long as they satisfy the moldability and have a strength that can be used when formed into a molded body. Commercially available resins can be used as they are .

(C) Ethylene / α-olefin copolymer The ethylene / α-olefin copolymer component (C) of the present invention is defined by the following (i) to (ii). (I) 50 to 99 mol% of ethylene component and 1 to 50 mol% of component unit derived from α-olefin having 3 to 20 carbon atoms, (ii) intrinsic viscosity [η] in 135 ° C. decalin is It is in the range of 0.1 to 10 dl / g. As the α-olefin, an α-olefin having 3 to 10 carbon atoms can be used more suitably, and within this range, one kind may be used alone, or two or more kinds may be used. The ratio of each monomer component is preferably ethylene: 55 to 98 mol%, α-olefin; 2 to 45 mol%, more preferably ethylene: 60 to 95 mol%, α-olefin; 5 to 40 mol%. As for (ii), the intrinsic viscosity [η] is preferably in the range of 0.5 to 8, and more preferably in the range of 0.8 to 6. When the amount is in the above range, an adhesive having an excellent balance between flexibility and mechanical strength and high adhesive strength can be obtained.

The method for producing the ethylene / α-olefin copolymer (C) is not particularly limited, and may be produced by a known method using a known catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst. it can. Furthermore, there are no particular restrictions on the stereoregularity and the molecular weight as long as they satisfy the moldability and have a strength that can be used when formed into a molded body. Commercially available resins can be used as they are .

<Unsaturated carboxylic acid and / or derivative thereof>
In the adhesive of the present invention, a part of the composition is graft-modified . The resin contained in any of the polypropylene component (A), the ethylene / propylene / α-olefin copolymer component (B), and the ethylene / α-olefin copolymer component (C) may be modified with a graft monomer. . As the graft monomer, an unsaturated carboxylic acid and / or a derivative thereof can be preferably used. Examples of unsaturated carboxylic acids and / or derivatives thereof include unsaturated compounds having one or more carboxylic acid groups, esters of a compound having a carboxylic acid group and an alkyl alcohol, and unsaturated compounds having one or more carboxylic anhydride groups. Examples of the unsaturated group include a vinyl group, a vinylene group, and an unsaturated cyclic hydrocarbon group. Moreover, when using unsaturated carboxylic acid and / or its derivative (s) in this invention, it can also be used individually by 1 type and can also be used in combination of 2 or more type. Of these, unsaturated dicarboxylic acids or acid anhydrides thereof are suitable, and maleic acid, nadic acid or acid anhydrides thereof are particularly preferably used. After modification with an unsaturated carboxylic acid and / or its derivative, it may be further modified with diamine, carbodiimide, or the like.

  Content with respect to 100 weight part of compositions of unsaturated carboxylic acid and / or its derivative (s) is 0.01-5 weight part normally, Preferably it is 0.01-3 weight part. When the content of the unsaturated carboxylic acid and / or derivative thereof is in the above range, the polyolefin composition of the present invention exhibits high adhesive strength with respect to polyester or ethylene / vinyl alcohol copolymer. The content of the unsaturated carboxylic acid and / or derivative thereof can be easily controlled by, for example, appropriately selecting the grafting conditions.

<Grafting method>
In the present invention, when a graft monomer selected from an unsaturated carboxylic acid and / or a derivative thereof is grafted, the method is not particularly limited, and a conventionally known graft polymerization method such as a solution method or a melt-kneading method is employed. be able to. For example, there are a method in which a polymer is melted and a grafting monomer is added thereto for a grafting reaction, or a solution is prepared by dissolving the polymer in a solvent and a grafting monomer is added thereto for a grafting reaction.

<Adhesive>
It does not specifically limit as a manufacturing method of the adhesive agent of this invention, A well-known method is employable. For example, polypropylene (A), ethylene / propylene / α-olefin copolymer (B), ethylene / α-olefin copolymer (C), or other components blended as needed are melted together or sequentially. The method of kneading is mentioned. When graft modification is performed, graft modification is performed in the state where the components (A), (B), and (C) are present at the same time, or a part of the components (A), (B), or (C) is graft modified. Then, there is a method of obtaining a modified polyolefin composition by melt-kneading the obtained graft modified product together with an unmodified resin. Among them, a method of melt-mixing an unmodified component after graft-modifying a part or all of polypropylene (A) is useful.

  Examples of the melt kneading method include a method of dry blending the resin composition and then melt kneading with a uniaxial or biaxial screw extruder, a Banbury mixer, a roll, various kneaders, etc. A machine is preferably used. The temperature in the melt-kneading is not particularly limited as long as (A), (B), and (C) are melted, but is usually 160 to 300 ° C, preferably 180 to 250 ° C. Is common.

  The adhesive resin composition of the present invention has an ethylene / propylene / α-olefin ratio of n-decane-soluble content of 5 to 95/5 to 95/1 to 50 mol% (however, the total does not exceed 100 mol%). .). More preferably, it is 15-75 / 25-65 / 1-20, More preferably, it is 20-60 / 30-60 / 5-15 mol% (however, each sum does not exceed 100 mol%). By taking the composition, it is possible to obtain a laminate that is firmly adhered to the polar material, and at the same time, it is possible to obtain a laminate that is excellent in adhesion even in high-speed cast film molding, stretch molding, and extrusion coating molding. Moreover, it becomes possible to obtain a laminated body without whitening after secondary processing such as deep drawing.

  In the adhesive resin composition of the present invention, other resins, elastomers and the like (for example, high pressure method LDPE, HDPE) that can be mixed can be blended within a range that does not impair the object of the present invention. The blending of the other resins, etc., is the same as the above (A), (B), (C), but mixing after obtaining the adhesive from (A), (B), (C). May be.

  To the adhesive resin composition of the present invention, known process stabilizers, heat-resistant stabilizers, heat-resistant aging agents, fillers, and the like can be added as long as the object of the present invention is not impaired. In the present invention, it is particularly preferable to add a so-called tackifier for the purpose of imparting tackiness. Examples of the substance that imparts tackiness include rosin derivatives, terpene resins, petroleum resins, and hydrides thereof. Among these, hydrogenated terpene resins and hydrogenated petroleum resins are preferable. The tackifier is preferably blended in an amount of 70 to 98% by weight of adhesive and 2 to 30% by weight of tackifier.

<Laminated body>
The adhesive of the present invention is suitably used as an adhesive layer for a laminate. Various thermoplastic resins such as polyolefin, polyester, polyamide or ethylene / vinyl alcohol copolymer can be used as the resin of the other thermoplastic resin layer constituting the laminate. Among these, ethylene / vinyl alcohol copolymer is used. Polymers are preferably used.

  As the ethylene / vinyl alcohol copolymer, a copolymer containing 20 to 50 mol%, preferably 25 to 48 mol% of a polymerized unit derived from ethylene is desirable. These can be produced by saponifying a corresponding ethylene / vinyl acetate copolymer by a conventional method.

  The laminate of the present invention is preferably one in which an ethylene / vinyl alcohol copolymer layer is laminated on at least one surface of the polypropylene-based adhesive resin composition layer of the present invention.

  The laminate of the present invention can be produced, for example, by melting the composition and resin of each layer and laminating them in a molten state. Moreover, a laminated body can be manufactured also by coating the adhesive agent of a molten state on the surface of a film or a metal tube.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further more concretely, this invention is not restrict | limited at all to these Examples, unless the summary is exceeded.

(Various measurement methods)
In this example and the like, measurement was performed according to the following method.
[Melt flow rate (MFR)]
Measurements were performed in accordance with ASTM D1238 under 230 ° C. and 2.16 kg load.
[density]
The density was measured according to JIS K7112.
[Intrinsic viscosity [η]]
[Η] was measured according to ASTM D1601.
[Monomer composition analysis of n-decane solubles]
The sample is dissolved in n-decane by heating, then allowed to cool and cooled to room temperature. In this state, the component dissolved in n-decane becomes the n-decane-soluble component. In order to analyze the monomer composition of the n-decane soluble component, acetone is mixed into this solution to precipitate a polymer component, and then the IR of the obtained polymer is measured.
(Polyolefin used)
The polyolefin used in Examples and Comparative Examples is shown below. In addition, unless otherwise indicated, all were prepared by polymerization according to a conventional method.

Modified PP-1: Modified homopolypropylene (maleic anhydride graft amount = 1.0 wt%, [η] = 0.8)
Modified PP-2: Modified homopolypropylene (maleic anhydride graft amount = 3.0 wt%, [η] = 0.4)
PP-1: random polypropylene (propylene = 96 mol%, ethylene = 3 mol%, butene = 1 mol%)
[Η] = 2.0)
PEBR-1: ethylene / propylene / α-olefin copolymer (ethylene = 13 mol%, propylene = 68 mol%, butene = 19 mol%)
[Η] = 1.9)
EPR-1: ethylene / propylene copolymer (ethylene = 80 mol%, propylene = 20 mol%, [η] = 1.9)
EPR-2: Ethylene / propylene copolymer (ethylene = 80 mol%, propylene = 20 mol%, [η] = 2.2)
LDPE: High-pressure low-density polyethylene (MFR = 8 g / 10 min)
[Example 1]
(Adhesive strength of cast film)
<Manufacture of adhesives>
(A) 20% by weight of modified homopolypropylene (modified PP-1) having [η] of 0.8, and (B) ethylene / propylene / α-olefin copolymer (PEBR) having [η] of 1.9 -1) Melting and kneading 55% by weight and (C) 25% by weight of ethylene / propylene copolymer (EPR-2) having [η] of 2.2 at 230 ° C. using a single screw extruder and bonding Agent-1 was obtained. The melt flow rate of the obtained adhesive-1 was 5.2 g / 10 minutes.

<Production of three-layer laminate>
Each layer having the structure shown below was coextruded under the following conditions to form a three-layer film.

[Inner layer]
As an ethylene / vinyl alcohol copolymer (hereinafter referred to as EVOH), Kuraray Co., Ltd. EVAL (registered trademark) F101A (MFR = 1.0 g / 10 min) was used with a screw having a diameter of 40 mm and L / D = 28. And extruded at 220 ° C.

[Outer layer]
A commercially available polypropylene (F327D manufactured by Prime Polymer Co., Ltd., MFR = 7) was extruded at 230 ° C. using a screw having a diameter of 50 mm and an effective length L / D = 28.

[Middle layer]
Adhesive-1 was extruded at 230 ° C. using a screw having a diameter of 40 mm and an effective length L / D = 28.

<Laminate molding conditions>
The resin extruded for the outer layer, the inner layer, and the intermediate layer was laminated in the order of the inner layer, the intermediate layer, and the outer layer in the feed block. The die temperature was 230 ° C., and the laminate of each resin coextruded into a film having a thickness of about 70 μm was taken up at a speed of 20 m / min while being cooled by a chill roll. The thickness of each layer was outer layer (polypropylene) / intermediate layer (adhesive) / inner layer (EVOH) = 40/10/20 μm. Moreover, when it picked up at 40 m / min, the thickness of each layer was taken as outer layer (polypropylene) / intermediate layer (adhesive) / inner layer (EVOH) = 20/5/10 μm. Table 1 shows the interlayer adhesion of the molded laminate.

<Adhesive strength evaluation of laminate>
The laminate produced above was cut into a width of 15 mm, and the adhesive force (unit: N / 15 mm) was measured at a room temperature of 23 ° C. using a tensile tester at the interface between the EVOH layer and the adhesive layer. . The crosshead speed was 300 mm / min.

[Example 2, Comparative Examples 1-2]
According to the formulation shown in Table 1, an adhesive was produced in the same manner as in Example 1. Table 1 shows the physical properties of the obtained adhesive and the measurement / evaluation results of the molded laminate.

[Example 3]
(Adhesive strength of stretched film)
<Manufacture of adhesives>
(A) 75.5% by weight of random polypropylene (PP-1) with [η] of 2.0, and (B) ethylene / propylene / α-olefin copolymer (PEBR with [η] of 1.9) -1) 15% by weight, (C) 5% by weight of ethylene / propylene copolymer (EPR-2) [η] is 2.2, and (D) modified homopolymer having [η] of 0.4 An adhesive-1 was obtained by melt-kneading 4.5 wt% of polypropylene (modified PP-2) at 230 ° C. using a single screw extruder. The melt flow rate of the obtained adhesive-1 was 7.9 g / 10 min.

<Manufacture of 5-layer laminate>
Each layer having the structure shown below was coextruded under the following conditions to form a 5-layer stretched film.

1) Molding of 5-layer sheet [Outer layer and inner layer]
A commercially available polypropylene (E-233GV, MFR = 1, manufactured by Prime Polymer Co., Ltd.) was extruded at 230 ° C. using a screw having a diameter of 40 mm and an effective length L / D = 28.

[Adhesive layer]
Adhesive-1 was extruded at 230 ° C. using a screw having a diameter of 40 mm and an effective length L / D = 28.

[Middle layer]
As an ethylene / vinyl alcohol copolymer (hereinafter referred to as EVOH), Kuraray Co., Ltd. EVAL (registered trademark) F101B (MFR = 1.0 g / 10 min) was used with a screw having a diameter of 30 mm and L / D = 24. And extruded at 220 ° C.

[Sheet forming conditions]
The resin extruded for the outer layer, inner layer, adhesive layer and intermediate layer was laminated to the inner layer, adhesive layer, intermediate layer, adhesive layer and outer layer in the feed block. The die temperature was 220 ° C., and the laminate of each resin coextruded into a sheet having a thickness of about 850 μm was taken up at a speed of 1 m / min while being cooled by a chill roll. The thickness of each layer was outer layer (polypropylene) / adhesive layer (adhesive-1) / intermediate layer (EVOH) / adhesive layer (adhesive-1) / inner layer (polypropylene) = 350/50/50/50/350 μm. .

2) 5-layer stretched film molding [stretched film molding conditions]
After preheating at 140 ° C., the film was biaxially stretched 6 times as an area ratio at a take-off speed of 1.5 m / min, annealed at 100 ° C., and cooled at room temperature to form a stretched film. The thickness of each layer was outer layer (polypropylene) / adhesive layer (adhesive-1) / intermediate layer (EVOH) / adhesive layer (adhesive-1) / inner layer (polypropylene) = 60/8/8/6/60 μm. . Table 1 shows the interlayer adhesion of the molded laminate.

<Adhesive strength evaluation of laminate>
The laminate produced above was cut into a width of 15 mm, and the adhesive force (unit: N / 15 mm) was measured at a room temperature of 23 ° C. using a tensile tester at the interface between the EVOH layer and the adhesive layer. . The crosshead speed was 300 mm / min.

[Comparative Examples 3 to 4]
An adhesive was produced in the same manner as in Example 3 in accordance with the formulation shown in Table 2. Table 2 shows the physical properties of the obtained adhesive and the measurement / evaluation results of the molded laminate.

[Example 4]
(Adhesive strength and whitening resistance of extrusion coating film)
<Manufacture of adhesives>
(A) 20% by weight of a modified homopolypropylene (PP-1) having [η] of 0.8, and (B) an ethylene / propylene / α-olefin copolymer (PEBR−) having [η] of 1.9. 1) 55 wt% and (C) 25 wt% of ethylene / α-olefin copolymer (EPR-1) [η] of 1.9 is melt kneaded at 230 ° C. using a single screw extruder, Adhesive-1 was obtained. The melt flow rate of the obtained adhesive-1 was 5.2 g / 10 min.

<Production of three-layer laminate>
Each layer having the structure shown below was subjected to coextrusion coating under the following conditions to form a three-layer film.

[Outer layer and middle layer]
Commercially available polypropylene (Prime Polymer F329RA, MFR = 24) and Adhesive-1 were extruded at 290 ° C. using a screw with a diameter of 50 mm and an effective length L / D = 28.

[Laminate molding conditions]
The resin extruded for the outer layer and the inner layer was laminated in the order of the inner layer and the outer layer in the feed block. The die temperature is 290 ° C, and each resin laminate coextruded into a film with a thickness of about 40 µm is in contact with the surface of the aluminum foil (thickness 20 µm) in a molten state, and then cooled with a chill roll with a pinch roll. While receiving, it was picked up at a speed of 50 m / min. The thickness of each layer was outer layer (polypropylene) / inner layer (adhesive) = 20/20 μm. Table 3 shows the interlayer adhesion of the molded laminate.

<Adhesive strength evaluation of laminate>
The laminate produced above was cut into a width of 15 mm, and the adhesive force (unit: N / 15 mm) was measured at a room temperature of 23 ° C. by a T-peel method at the interface between the aluminum foil and the adhesive layer. . The crosshead speed was 300 mm / min.

<Evaluation of whitening resistance after deep drawing>
The laminated body produced above was deep-drawn with a mold having a meshing depth of 5 mm, and the presence or absence of whitening of the wall surface was visually confirmed.

[Examples 5-6, Comparative Examples 5-6]
An adhesive was produced in the same manner as in Example 4 according to the formulation shown in Table 3. Table 3 shows the physical properties of the obtained adhesive and the measurement / evaluation results of the molded laminate.

Claims (9)

Polypropylene component (A) (excluding component (B)) , ethylene / propylene / α-olefin copolymer component (B), ethylene / α-olefin copolymer component (C), part of which A resin composition graft-modified with at least one selected from unsaturated compounds having at least one carboxylic acid group, esters of a compound having a carboxylic acid group and an alkyl alcohol, and unsaturated compounds having at least one carboxylic anhydride group In total 100 parts by mass of components (A), (B) and (C), component (A) is 5 to 80 parts by mass, component (B) is 5 to 70 parts by mass, and component (C) Is 1 to 40 parts by mass, the ratio of ethylene / propylene / α-olefin of the n-decane-soluble component is 5 to 95/5 to 95/1 to 50 mol%, and the grafting ratio relative to the whole composition is 0.00. 01-5wt% The propylene component in the component (A) is 50 mol% or more and less than 100 mol%, the propylene component in the component (B) is 45 to 90 mol%, the ethylene component is 10 to 25 mol%, and the carbon number is 4 to 20 The component unit derived from α-olefin is 1 to 30 mol%, the ethylene component in component (C) is 50 to 99 mol%, and the component unit derived from α-olefin having 3 to 20 carbon atoms is 1 to 50 mol%. adhesives comprising contacting adhesive resin composition Ru der. The adhesive according to claim 1, wherein the intrinsic viscosity [η] in 135 ° C decalin of the component (B) is 0.1 to 10 dl / g. The adhesive according to claim 1 or 2, wherein the intrinsic viscosity [η] in 135 ° C decalin of the component (C) is 0.1 to 10 dl / g. The adhesive according to any one of claims 1 to 3, wherein the intrinsic viscosity [η] in 135 ° C decalin of the component (A) is 0.1 to 10 dl / g. Furthermore, the adhesive agent of any one of Claims 1-4 containing a tackifier. The laminated body which has at least 1 layer of the layer containing the adhesive agent of any one of Claims 1-5 . The laminated body of Claim 6 shape | molded by the cast film shaping | molding method whose shaping | molding speed is 40 m / min or more. The laminate according to claim 6, which has been stretched twice or more as an area ratio. The laminate according to claim 6, which is formed by an extrusion coating method.